<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style type="text/css"></style>
		<script type="text/javascript">
			let num1 = 10;
			let num2 = 5;
			let num3 = 5; //Numnber
			let num4 = '5'; //String
			
			
			console.log("num1",num1);
			console.log("num2",num2);
			console.log("num3",num3);
			console.log("num4",num4);
			console.log("num1>num2",num1>num2);
			console.log("num1<num2",num1<num2);
			console.log("num1<=num2",num1<=num2);
			console.log("num3<=num2",num3<=num2);
			
			//== 会转换数据类型
			console.log("num3 == num4",num3==num4);
			//=== 字面量  类型  
			console.log("num3 === num4",num3===num4);
			
			//判断数据类型 typeof
			// let num3Type = typeof(num3); // 'number' 
			let num3Type = typeof num3; // 'number' 
			console.log("num3Type" , num3Type)
			console.log("typeof(num3Type)" , typeof(num3Type))
			
			// if(typeof(num3) === 'number' ){
			// 	//console.log("num3 是数字类型")
			// }
			
			
			
			
			
			
			
			
			
			
			
			
			
				
				
						
		</script>
	</head>
	<body>


	</body>
</html>